2 years ago

Solve 8/-6 + 8 = 12. a =

Mathematics

1 answer:

enot [183]2 years ago

4 0

The correct answer is a = 12

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1. tan a = cot(a + 10°)

Temka [501]

Answer:

$a=40+90n$

Step-by-step explanation:

Use a cofunction identity on the right hand side or left hand side...

So $\tan(a)=\cot(90-a)$ .

We have the equation:

$\tan(a)=\cot(a+10)$

Make the above replacement:

$\cot(90-a)=\cot(a+10)$

Since cotangent has period 180 degrees, we can also write this as:

$\cot(90-a+180n)=\cot(a+10)$

So solving the following will give us a set of solutions for $a$ :

$90-a+180n=a+10$

Add $a$ on both sides:

$90+180n=2a+10$

Subtract 10 on both sides:

$80+180n=2a$

Divide both sides by 2:

$40+90n=a$

Symmetric property:

$a=40+90n$

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2 years ago

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Answer:

0 days:

1 day:

2 days:

3 days:

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5 days:

Step-by-step explanation:

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Write a mathematical expression for the phrase 8 divided by x added to the absolute value of 5y

gizmo_the_mogwai [7]

Answer:

|5y|+8/x

Step-by-step explanation:

The mathematical expression is |5y|+8/x

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2 years ago

What does this equal to (b^3)2

soldi70 [24.7K]

Answer:

2b^3

Step-by-step explanation:

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11(2x + 1) = 4x - 7 show work

Harlamova29_29 [7]

Answer:

0.22

Step-by-step explanation:

22x + 11 = 4x - 7

22x - 4x = -7 + 11

18x = 4

x = 4/18

x = 0.22

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